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37655163 AS |
1 | /* |
2 | * Copyright (C) 2013-2014, Linaro Ltd. | |
3 | * Author: Al Stone <al.stone@linaro.org> | |
4 | * Author: Graeme Gregory <graeme.gregory@linaro.org> | |
5 | * Author: Hanjun Guo <hanjun.guo@linaro.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation; | |
10 | */ | |
11 | ||
12 | #ifndef _ASM_ACPI_H | |
13 | #define _ASM_ACPI_H | |
14 | ||
e7cd1903 | 15 | #include <linux/memblock.h> |
bff60792 | 16 | #include <linux/psci.h> |
d60fc389 | 17 | |
020295b4 HG |
18 | #include <asm/cputype.h> |
19 | #include <asm/smp_plat.h> | |
9f9a35a7 | 20 | #include <asm/tlbflush.h> |
652261a7 | 21 | |
b6cfb277 AS |
22 | /* Macros for consistency checks of the GICC subtable of MADT */ |
23 | #define ACPI_MADT_GICC_LENGTH \ | |
24 | (acpi_gbl_FADT.header.revision < 6 ? 76 : 80) | |
25 | ||
26 | #define BAD_MADT_GICC_ENTRY(entry, end) \ | |
27 | (!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) || \ | |
28 | (entry)->header.length != ACPI_MADT_GICC_LENGTH) | |
29 | ||
37655163 AS |
30 | /* Basic configuration for ACPI */ |
31 | #ifdef CONFIG_ACPI | |
8d3523fb | 32 | /* ACPI table mapping after acpi_permanent_mmap is set */ |
652261a7 MS |
33 | static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys, |
34 | acpi_size size) | |
35 | { | |
e7cd1903 AT |
36 | /* |
37 | * EFI's reserve_regions() call adds memory with the WB attribute | |
38 | * to memblock via early_init_dt_add_memory_arch(). | |
39 | */ | |
40 | if (!memblock_is_memory(phys)) | |
652261a7 MS |
41 | return ioremap(phys, size); |
42 | ||
43 | return ioremap_cache(phys, size); | |
44 | } | |
45 | #define acpi_os_ioremap acpi_os_ioremap | |
46 | ||
020295b4 HG |
47 | typedef u64 phys_cpuid_t; |
48 | #define PHYS_CPUID_INVALID INVALID_HWID | |
49 | ||
37655163 AS |
50 | #define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */ |
51 | extern int acpi_disabled; | |
52 | extern int acpi_noirq; | |
53 | extern int acpi_pci_disabled; | |
54 | ||
55 | static inline void disable_acpi(void) | |
56 | { | |
57 | acpi_disabled = 1; | |
58 | acpi_pci_disabled = 1; | |
59 | acpi_noirq = 1; | |
60 | } | |
61 | ||
b10d79f7 AS |
62 | static inline void enable_acpi(void) |
63 | { | |
64 | acpi_disabled = 0; | |
65 | acpi_pci_disabled = 0; | |
66 | acpi_noirq = 0; | |
67 | } | |
68 | ||
020295b4 HG |
69 | /* |
70 | * The ACPI processor driver for ACPI core code needs this macro | |
71 | * to find out this cpu was already mapped (mapping from CPU hardware | |
72 | * ID to CPU logical ID) or not. | |
73 | */ | |
74 | #define cpu_physical_id(cpu) cpu_logical_map(cpu) | |
75 | ||
37655163 AS |
76 | /* |
77 | * It's used from ACPI core in kdump to boot UP system with SMP kernel, | |
78 | * with this check the ACPI core will not override the CPU index | |
79 | * obtained from GICC with 0 and not print some error message as well. | |
80 | * Since MADT must provide at least one GICC structure for GIC | |
81 | * initialization, CPU will be always available in MADT on ARM64. | |
82 | */ | |
83 | static inline bool acpi_has_cpu_in_madt(void) | |
84 | { | |
85 | return true; | |
86 | } | |
87 | ||
472d819d MR |
88 | struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu); |
89 | ||
37655163 | 90 | static inline void arch_fix_phys_package_id(int num, u32 slot) { } |
fccb9a81 | 91 | void __init acpi_init_cpus(void); |
37655163 | 92 | |
7c59a3df | 93 | #else |
fccb9a81 | 94 | static inline void acpi_init_cpus(void) { } |
37655163 AS |
95 | #endif /* CONFIG_ACPI */ |
96 | ||
5e89c55e LP |
97 | #ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL |
98 | bool acpi_parking_protocol_valid(int cpu); | |
99 | void __init | |
100 | acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor); | |
101 | #else | |
102 | static inline bool acpi_parking_protocol_valid(int cpu) { return false; } | |
103 | static inline void | |
104 | acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor) | |
105 | {} | |
106 | #endif | |
107 | ||
0f078336 LP |
108 | static inline const char *acpi_get_enable_method(int cpu) |
109 | { | |
5e89c55e LP |
110 | if (acpi_psci_present()) |
111 | return "psci"; | |
112 | ||
113 | if (acpi_parking_protocol_valid(cpu)) | |
114 | return "parking-protocol"; | |
115 | ||
116 | return NULL; | |
0f078336 | 117 | } |
89e44b51 JZZ |
118 | |
119 | #ifdef CONFIG_ACPI_APEI | |
9f9a35a7 TN |
120 | /* |
121 | * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling | |
122 | * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode | |
123 | * with a kernel command line parameter "acpi=nocmcoff". But we don't | |
124 | * have this IA-32 specific feature on ARM64, this definition is only | |
125 | * for compatibility. | |
126 | */ | |
127 | #define acpi_disable_cmcff 1 | |
89e44b51 | 128 | pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); |
9f9a35a7 TN |
129 | |
130 | /* | |
131 | * Despite its name, this function must still broadcast the TLB | |
132 | * invalidation in order to ensure other CPUs don't end up with junk | |
133 | * entries as a result of speculation. Unusually, its also called in | |
134 | * IRQ context (ghes_iounmap_irq) so if we ever need to use IPIs for | |
135 | * TLB broadcasting, then we're in trouble here. | |
136 | */ | |
137 | static inline void arch_apei_flush_tlb_one(unsigned long addr) | |
138 | { | |
139 | flush_tlb_kernel_range(addr, addr + PAGE_SIZE); | |
140 | } | |
141 | #endif /* CONFIG_ACPI_APEI */ | |
89e44b51 | 142 | |
d8b47fca HG |
143 | #ifdef CONFIG_ACPI_NUMA |
144 | int arm64_acpi_numa_init(void); | |
145 | int acpi_numa_get_nid(unsigned int cpu, u64 hwid); | |
146 | #else | |
147 | static inline int arm64_acpi_numa_init(void) { return -ENOSYS; } | |
148 | static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; } | |
149 | #endif /* CONFIG_ACPI_NUMA */ | |
150 | ||
38b04a74 JM |
151 | #define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE |
152 | ||
37655163 | 153 | #endif /*_ASM_ACPI_H*/ |